miguel almageur, nbc news, los angeles. >>> to an amtrak train derailment that left 00 passengers stranded overnight in south carolina. the new york-bound train derailed causing several cars to slip off the tracks and injure several passengers, luck request for the passengers, the train had full power and heat, shielding them from the 20-degree weather outside. buses are en route to transfer passengers to another rail. >>> living abroad now to iran where an historic nuclear deal is done. the international reaction coming swift and mixed. with america's closest mideast ally israel calling it an historic mistake, here at home, leading members of congress are cautious but accepting. nbc's ahman mohyeldin. good morning. this deal follows years of behind-the-scenes diplomatic work. the question might be what are the next steps that are so crucial in this? >> well the short answer to that is compliance and enforcement. on the one hand you have this agreement that's spells out what is expected to happen the in the next six months, and a big component of that involves inspections. daily inspection